Server - support.geosc.uh.edu

 

Note: Support refers to the http://support.geosc.uh.edu website.

 

Secure Shell Terminal Software

 

Secure shell terminal allows you remotely login to the various department UNIX servers. You may probably want to check on the status of your running job or run some commands etc. If you are going to start up application software that displays windows etc, then you need Thinanywhere software or PC-X server software (read documentation on Support for that)

 

  1. The first things to do are downloading and install the secure shell software from the software section on Support site.
  2. Then after installing the software, start up secure shell either from the start menu or from the desktop icon.

 

 

 

 

 

  1. Once you start up the software, you will get a window similar to one below

 

 

  1. Click on “quick connect” and when a second window pops up, input your username and the system you would like to logon to. Once you press connect, you will be prompted for a password, enter the password and you will be logged onto the system. Now you can run commands etc BUT NOT START ANY GRAPHICAL APPLICATIONS. When you are done, choose the File menu and select disconnect.

 

 

Connecting between UNIX systems     

 

You can also use secure shell to connect between different UNIX systems, for example if you are logged in on a sun/linux workstation and would like to login to geossun1 or sheriff, you can, from a terminal window say “ssh geossun1” or ”ssh sheriff” as the case may be.  Remember to set the DISPLAY variable back or else when you start a graphical application on the remote system (like geossun1 or sheriff), the display may not appear. So run the command “xhost + remote system”, then “ssh remote system” and on the remote system “setenv DISPLAY localsystem:0.0” or “export DISPLAY localsystem:0.0” (if you are connecting remotely to a linux system). The following window will explain better.

 

NOTE: You can automatically set the DISPLAY back without using the “setenv DISPLAY …” or “export DISPLAY …” command by using the following ssh command line argument “ssh +X” and on on Linux systems (like the cluster etc) “ssh –X” so for instance you can run the command “ssh +X sheriff.agl.uh.edu –l username_on_sheriff” when connecting from from geossun1 to sheriff..